No i don't think you can change your profile picture anymore from the Me hub which kinda sucks, but if you want your facebook contacts to appear and your Me tile to show your profile picture, you have to first go to the settings in the facebook app, hit settings, and enable "Connect with my phone".
Enter your Me tile and tap on your picture if you want to change your photo to your facebook profile pic.
Also, if you want your contacts on facebook to appear on the people hub, do the same thing. People hub>Tap on show some accounts>check the facebook box>Disable hide contacts without phone numbers .